Readme

Software Specification for attainU task.

Table of Contents

1. About The Project
   • Built With
2. Getting Started
   • Prerequisites
   • Installation
3. Usage

About The Project

Backend server using Express Framework to :

• User authentication using jwt
• User can add address and address data in database
• User can JSON patching
• Generate Image Thumbnail

A list of commonly used resources that I find helpful are listed in the acknowledgements.

Built With

This section should list any major frameworks that you built your project using. Leave any add-ons/plugins for the acknowledgements section. Here are a few examples.

• Node.js
• Express
• PostgreSQL
• JWT
• Lodash
• pg
• json-patch
• node-fetch
• sharp

Getting Started

This is an example of how you may give instructions on setting up your project locally. To get a local copy up and running follow these simple example steps.

Prerequisites(Linux)

This is an example of how to list things you need to use the software and how to install them.

• npm

  sudo apt install npm

• nodejs

  sudo apt-get install nodejs

Installation

1. Clone the repo

   git clone https://github.com/your_username_/Project-Name.git

2. Install NPM packages

   npm install

3. Setup .env

   create a .env file in project directory
   copy environment variables from example-env to .env
   

4. Start the server

   npm start

Usage

Here is the postman api collention in order to access the api directly from postman postman-api-collection

Public APIs

1. Authentication

   The api is used for authenticating user with jwt token, the user has to enter his username and password and in response to that a jwt token is generated for the user. The jwt token will be used to access proctected apis.
   

   @POST http://localhost:3000/api/v1/login
    Content-Type: application/json
    {
      "username": "username",
      "password": "pass"
    }

      {
          "success": true,
          "data": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6Imt1bWFyIiwiaWF0IjoxNjIxMjU0MzQxLCJleHAiOjE2MjEzNDA3NDF9.   aKpdW6mZYRq7rc3xYXzkO98eDccYfiomH6uMEUZ5_r8"
      }

Protected APIs

NOTE: All protected apis can only be accessed using token which can be generated from above authentication api. The token needs to be passed inside the headers

1. JSON Patching

   The api is used for creating a patched json. The user need to pass a original json and a path json.
   

   @POST http://localhost:3000/api/v1/pro/add-json-path 
    Co ntent-Type: application/json
    Headers: token: <jwt token>
   
    {
        "original_doc": {
            "baz": "qux",
            "foo": "bar"
        },
        "patch_doc": [
            {
                "op": "replace",
                "path": "/baz",
                "value": "boo"
            },
            {
                "op": "add",
                "path": "/hello",
                "value": [
                    "world"
                ]
            },
            {
                "op": "remove",
                "path": "/foo"
            }]
    }

        {
          "success": true,
          "data": {
                    "patchedDoc": {
                    "baz": "boo",
                    "hello": ["world"]
                    }
                  }
        }

2. Add user address

  The api is used for storing the address of the user in the database.

 @POST http://localhost:3000/api/v1/pro/add-user-address
 Content-Type: application/json
 Headers: token: <jwt token>
 {
   "address": "address"
 }

 {
   "success": true,
   "data": "Data added successfully"
 }

3. Generate Image Thumbnail

  The api is used for generating 25x25 thumbnail image from a image url.

 @POST http://localhost:3000/api/v1/pro/create-image-thumbnail
 Content-Type: application/json
 Headers: token: <jwt token>
 {
    "image_url": "https://images.unsplash.com/photo-1585399000684-d2f72660f092?ixid=MnwxMjA3fDF8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1051&q=80"
 }

 thumbnail.jpg